Can anybody tell me what is required to run a casino?

Hi guys. I've just finished university and what to start a business in the next 10 years or so. I have noticed how gambling in the UK is becoming ever more popular and the concentration of casinos in the UK market isn't yet saturated, so I think there is an opportunity here. I completely understand the risks financially of running a casino, but I am far more attracted to the poker side of the industry. Ideally I would like to only run the poker side of things and give the risks of running the roulette, blackjack ect... to an investor prepared to take the risks. Of course I could just have poker rooms and nothing else, but I feel that there needs to be the roulettes and the other risk games on site as well in order to attract a big enough customer base to make it viable. Basically my business model would be to buy a large building, rent out the risky side to an outside investor to run the casino games and just operate the poker rooms. Can anybody tell me whether this is a viable plan? Or is it more profitable to take the risks of managing all the casino games myself? Can anybody tell me the investment required to cover the financial risk too please? Thanks